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/******************************************************************************

 *

 * Module Name: exoparg1 - AML execution - opcodes with 1 argument

 *

 *****************************************************************************/

/*

 * Copyright (C) 2000 - 2004, R. Byron Moore

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions, and the following disclaimer,

 *    without modification.

 * 2. Redistributions in binary form must reproduce at minimum a disclaimer

 *    substantially similar to the "NO WARRANTY" disclaimer below

 *    ("Disclaimer") and any redistribution must be conditioned upon

 *    including a substantially similar Disclaimer requirement for further

 *    binary redistribution.

 * 3. Neither the names of the above-listed copyright holders nor the names

 *    of any contributors may be used to endorse or promote products derived

 *    from this software without specific prior written permission.

 *

 * Alternatively, this software may be distributed under the terms of the

 * GNU General Public License ("GPL") version 2 as published by the Free

 * Software Foundation.

 *

 * NO WARRANTY

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR

 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING

 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGES.

 */

#include <acpi/acpi.h>

#include <acpi/acparser.h>

#include <acpi/acdispat.h>

#include <acpi/acinterp.h>

#include <acpi/amlcode.h>

#include <acpi/acnamesp.h>

#define _COMPONENT          ACPI_EXECUTER

         ACPI_MODULE_NAME    ("exoparg1")

/*!

 * Naming convention for AML interpreter execution routines.

 *

 * The routines that begin execution of AML opcodes are named with a common

 * convention based upon the number of arguments, the number of target operands,

 * and whether or not a value is returned:

 *

 *      AcpiExOpcode_xA_yT_zR

 *

 * Where:

 *

 * xA - ARGUMENTS:    The number of arguments (input operands) that are

 *                    required for this opcode type (1 through 6 args).

 * yT - TARGETS:      The number of targets (output operands) that are required

 *                    for this opcode type (0, 1, or 2 targets).

 * zR - RETURN VALUE: Indicates whether this opcode type returns a value

 *                    as the function return (0 or 1).

 *

 * The AcpiExOpcode* functions are called via the Dispatcher component with

 * fully resolved operands.

!*/

/*******************************************************************************

 *

 * FUNCTION:    acpi_ex_opcode_1A_0T_0R

 *

 * PARAMETERS:  walk_state          - Current state (contains AML opcode)

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on

 *              object stack

 *

 ******************************************************************************/

acpi_status

acpi_ex_opcode_1A_0T_0R (

        struct acpi_walk_state          *walk_state)

{

        union acpi_operand_object       **operand = &walk_state->operands[0];

        acpi_status                     status = AE_OK;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_1A_0T_0R", acpi_ps_get_opcode_name (walk_state->opcode));

        /* Examine the AML opcode */

        switch (walk_state->opcode) {

        case AML_RELEASE_OP:    /*  Release (mutex_object) */

                status = acpi_ex_release_mutex (operand[0], walk_state);

                break;

        case AML_RESET_OP:      /*  Reset (event_object) */

                status = acpi_ex_system_reset_event (operand[0]);

                break;

        case AML_SIGNAL_OP:     /*  Signal (event_object) */

                status = acpi_ex_system_signal_event (operand[0]);

                break;

        case AML_SLEEP_OP:      /*  Sleep (msec_time) */

                status = acpi_ex_system_do_suspend ((u32) operand[0]->integer.value);

                break;

        case AML_STALL_OP:      /*  Stall (usec_time) */

                status = acpi_ex_system_do_stall ((u32) operand[0]->integer.value);

                break;

        case AML_UNLOAD_OP:     /*  Unload (Handle) */

                status = acpi_ex_unload_table (operand[0]);

                break;

        default:                /*  Unknown opcode  */

                ACPI_REPORT_ERROR (("acpi_ex_opcode_1A_0T_0R: Unknown opcode %X\n",

                        walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

                break;

        }

        return_ACPI_STATUS (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_ex_opcode_1A_1T_0R

 *

 * PARAMETERS:  walk_state          - Current state (contains AML opcode)

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute opcode with one argument, one target, and no

 *              return value.

 *

 ******************************************************************************/

acpi_status

acpi_ex_opcode_1A_1T_0R (

        struct acpi_walk_state          *walk_state)

{

        acpi_status                     status = AE_OK;

        union acpi_operand_object       **operand = &walk_state->operands[0];

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_1A_1T_0R", acpi_ps_get_opcode_name (walk_state->opcode));

        /* Examine the AML opcode */

        switch (walk_state->opcode) {

        case AML_LOAD_OP:

                status = acpi_ex_load_op (operand[0], operand[1], walk_state);

                break;

        default:                        /* Unknown opcode */

                ACPI_REPORT_ERROR (("acpi_ex_opcode_1A_1T_0R: Unknown opcode %X\n",

                        walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

                goto cleanup;

        }

cleanup:

        return_ACPI_STATUS (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_ex_opcode_1A_1T_1R

 *

 * PARAMETERS:  walk_state          - Current state (contains AML opcode)

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute opcode with one argument, one target, and a

 *              return value.

 *

 ******************************************************************************/

acpi_status

acpi_ex_opcode_1A_1T_1R (

        struct acpi_walk_state          *walk_state)

{

        acpi_status                     status = AE_OK;

        union acpi_operand_object       **operand = &walk_state->operands[0];

        union acpi_operand_object       *return_desc = NULL;

        union acpi_operand_object       *return_desc2 = NULL;

        u32                             temp32;

        u32                             i;

        u32                             power_of_ten;

        acpi_integer                    digit;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_1A_1T_1R", acpi_ps_get_opcode_name (walk_state->opcode));

        /* Examine the AML opcode */

        switch (walk_state->opcode) {

        case AML_BIT_NOT_OP:

        case AML_FIND_SET_LEFT_BIT_OP:

        case AML_FIND_SET_RIGHT_BIT_OP:

        case AML_FROM_BCD_OP:

        case AML_TO_BCD_OP:

        case AML_COND_REF_OF_OP:

                /* Create a return object of type Integer for these opcodes */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                switch (walk_state->opcode) {

                case AML_BIT_NOT_OP:            /* Not (Operand, Result)  */

                        return_desc->integer.value = ~operand[0]->integer.value;

                        break;

                case AML_FIND_SET_LEFT_BIT_OP:  /* find_set_left_bit (Operand, Result) */

                        return_desc->integer.value = operand[0]->integer.value;

                        /*

                         * Acpi specification describes Integer type as a little

                         * endian unsigned value, so this boundary condition is valid.

                         */

                        for (temp32 = 0; return_desc->integer.value && temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {

                                return_desc->integer.value >>= 1;

                        }

                        return_desc->integer.value = temp32;

                        break;

                case AML_FIND_SET_RIGHT_BIT_OP: /* find_set_right_bit (Operand, Result) */

                        return_desc->integer.value = operand[0]->integer.value;

                        /*

                         * The Acpi specification describes Integer type as a little

                         * endian unsigned value, so this boundary condition is valid.

                         */

                        for (temp32 = 0; return_desc->integer.value && temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) {

                                return_desc->integer.value <<= 1;

                        }

                        /* Since the bit position is one-based, subtract from 33 (65) */

                        return_desc->integer.value = temp32 == 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - temp32;

                        break;

                case AML_FROM_BCD_OP:           /* from_bcd (BCDValue, Result) */

                        /*

                         * The 64-bit ACPI integer can hold 16 4-bit BCD characters

                         * (if table is 32-bit, integer can hold 8 BCD characters)

                         * Convert each 4-bit BCD value

                         */

                        power_of_ten = 1;

                        return_desc->integer.value = 0;

                        digit = operand[0]->integer.value;

                        /* Convert each BCD digit (each is one nybble wide) */

                        for (i = 0; (i < acpi_gbl_integer_nybble_width) && (digit > 0); i++) {

                                /* Get the least significant 4-bit BCD digit */

                                temp32 = ((u32) digit) & 0xF;

                                /* Check the range of the digit */

                                if (temp32 > 9) {

                                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,

                                                "BCD digit too large (not decimal): 0x%X\n",

                                                temp32));

                                        status = AE_AML_NUMERIC_OVERFLOW;

                                        goto cleanup;

                                }

                                /* Sum the digit into the result with the current power of 10 */

                                return_desc->integer.value += (((acpi_integer) temp32) * power_of_ten);

                                /* Shift to next BCD digit */

                                digit >>= 4;

                                /* Next power of 10 */

                                power_of_ten *= 10;

                        }

                        break;

                case AML_TO_BCD_OP:             /* to_bcd (Operand, Result) */

                        return_desc->integer.value = 0;

                        digit = operand[0]->integer.value;

                        /* Each BCD digit is one nybble wide */

                        for (i = 0; (i < acpi_gbl_integer_nybble_width) && (digit > 0); i++) {

                                (void) acpi_ut_short_divide (&digit, 10, &digit, &temp32);

                                /* Insert the BCD digit that resides in the remainder from above */

                                return_desc->integer.value |= (((acpi_integer) temp32) << (i * 4));

                        }

                        /* Overflow if there is any data left in Digit */

                        if (digit > 0) {

                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Integer too large to convert to BCD: %8.8X%8.8X\n",

                                                ACPI_FORMAT_UINT64 (operand[0]->integer.value)));

                                status = AE_AML_NUMERIC_OVERFLOW;

                                goto cleanup;

                        }

                        break;

                case AML_COND_REF_OF_OP:        /* cond_ref_of (source_object, Result) */

                        /*

                         * This op is a little strange because the internal return value is

                         * different than the return value stored in the result descriptor

                         * (There are really two return values)

                         */

                        if ((struct acpi_namespace_node *) operand[0] == acpi_gbl_root_node) {

                                /*

                                 * This means that the object does not exist in the namespace,

                                 * return FALSE

                                 */

                                return_desc->integer.value = 0;

                                goto cleanup;

                        }

                        /* Get the object reference, store it, and remove our reference */

                        status = acpi_ex_get_object_reference (operand[0], &return_desc2, walk_state);

                        if (ACPI_FAILURE (status)) {

                                goto cleanup;

                        }

                        status = acpi_ex_store (return_desc2, operand[1], walk_state);

                        acpi_ut_remove_reference (return_desc2);

                        /* The object exists in the namespace, return TRUE */

                        return_desc->integer.value = ACPI_INTEGER_MAX;

                        goto cleanup;

                default:

                        /* No other opcodes get here */

                        break;

                }

                break;

        case AML_STORE_OP:              /* Store (Source, Target) */

                /*

                 * A store operand is typically a number, string, buffer or lvalue

                 * Be careful about deleting the source object,

                 * since the object itself may have been stored.

                 */

                status = acpi_ex_store (operand[0], operand[1], walk_state);

                if (ACPI_FAILURE (status)) {

                        return_ACPI_STATUS (status);

                }

                /* It is possible that the Store already produced a return object */

                if (!walk_state->result_obj) {

                        /*

                         * Normally, we would remove a reference on the Operand[0] parameter;

                         * But since it is being used as the internal return object

                         * (meaning we would normally increment it), the two cancel out,

                         * and we simply don't do anything.

                         */

                        walk_state->result_obj = operand[0];

                        walk_state->operands[0] = NULL; /* Prevent deletion */

                }

                return_ACPI_STATUS (status);

        /*

         * ACPI 2.0 Opcodes

         */

        case AML_COPY_OP:               /* Copy (Source, Target) */

                status = acpi_ut_copy_iobject_to_iobject (operand[0], &return_desc, walk_state);

                break;

        case AML_TO_DECSTRING_OP:       /* to_decimal_string (Data, Result) */

                status = acpi_ex_convert_to_string (operand[0], &return_desc, 10, ACPI_UINT32_MAX, walk_state);

                break;

        case AML_TO_HEXSTRING_OP:       /* to_hex_string (Data, Result) */

                status = acpi_ex_convert_to_string (operand[0], &return_desc, 16, ACPI_UINT32_MAX, walk_state);

                break;

        case AML_TO_BUFFER_OP:          /* to_buffer (Data, Result) */

                status = acpi_ex_convert_to_buffer (operand[0], &return_desc, walk_state);

                break;

        case AML_TO_INTEGER_OP:         /* to_integer (Data, Result) */

                status = acpi_ex_convert_to_integer (operand[0], &return_desc, walk_state);

                break;

        case AML_SHIFT_LEFT_BIT_OP:     /*  shift_left_bit (Source, bit_num) */

        case AML_SHIFT_RIGHT_BIT_OP:    /*  shift_right_bit (Source, bit_num) */

                /*

                 * These are two obsolete opcodes

                 */

                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s is obsolete and not implemented\n",

                                  acpi_ps_get_opcode_name (walk_state->opcode)));

                status = AE_SUPPORT;

                goto cleanup;

        default:                        /* Unknown opcode */

                ACPI_REPORT_ERROR (("acpi_ex_opcode_1A_1T_1R: Unknown opcode %X\n",

                        walk_state->opcode));

                status = AE_AML_BAD_OPCODE;

                goto cleanup;

        }

        /*

         * Store the return value computed above into the target object

         */

        status = acpi_ex_store (return_desc, operand[1], walk_state);

cleanup:

        if (!walk_state->result_obj) {

                walk_state->result_obj = return_desc;

        }

        /* Delete return object on error */

        if (ACPI_FAILURE (status)) {

                acpi_ut_remove_reference (return_desc);

        }

        return_ACPI_STATUS (status);

}

/*******************************************************************************

 *

 * FUNCTION:    acpi_ex_opcode_1A_0T_1R

 *

 * PARAMETERS:  walk_state          - Current state (contains AML opcode)

 *

 * RETURN:      Status

 *

 * DESCRIPTION: Execute opcode with one argument, no target, and a return value

 *

 ******************************************************************************/

acpi_status

acpi_ex_opcode_1A_0T_1R (

        struct acpi_walk_state          *walk_state)

{

        union acpi_operand_object       **operand = &walk_state->operands[0];

        union acpi_operand_object       *temp_desc;

        union acpi_operand_object       *return_desc = NULL;

        acpi_status                     status = AE_OK;

        u32                             type;

        acpi_integer                    value;

        ACPI_FUNCTION_TRACE_STR ("ex_opcode_1A_0T_1R", acpi_ps_get_opcode_name (walk_state->opcode));

        /* Examine the AML opcode */

        switch (walk_state->opcode) {

        case AML_LNOT_OP:               /* LNot (Operand) */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                return_desc->integer.value = !operand[0]->integer.value;

                break;

        case AML_DECREMENT_OP:          /* Decrement (Operand)  */

        case AML_INCREMENT_OP:          /* Increment (Operand)  */

                /*

                 * Since we are expecting a Reference operand, it

                 * can be either a NS Node or an internal object.

                 */

                return_desc = operand[0];

                if (ACPI_GET_DESCRIPTOR_TYPE (operand[0]) == ACPI_DESC_TYPE_OPERAND) {

                        /* Internal reference object - prevent deletion */

                        acpi_ut_add_reference (return_desc);

                }

                /*

                 * Convert the return_desc Reference to a Number

                 * (This removes a reference on the return_desc object)

                 */

                status = acpi_ex_resolve_operands (AML_LNOT_OP, &return_desc, walk_state);

                if (ACPI_FAILURE (status)) {

                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "%s: bad operand(s) %s\n",

                                acpi_ps_get_opcode_name (walk_state->opcode), acpi_format_exception(status)));

                        goto cleanup;

                }

                /*

                 * return_desc is now guaranteed to be an Integer object

                 * Do the actual increment or decrement

                 */

                if (AML_INCREMENT_OP == walk_state->opcode) {

                        return_desc->integer.value++;

                }

                else {

                        return_desc->integer.value--;

                }

                /* Store the result back in the original descriptor */

                status = acpi_ex_store (return_desc, operand[0], walk_state);

                break;

        case AML_TYPE_OP:               /* object_type (source_object) */

                /* Get the type of the base object */

                status = acpi_ex_resolve_multiple (walk_state, operand[0], &type, NULL);

                if (ACPI_FAILURE (status)) {

                        goto cleanup;

                }

                /* Allocate a descriptor to hold the type. */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                return_desc->integer.value = type;

                break;

        case AML_SIZE_OF_OP:            /* size_of (source_object) */

                /* Get the base object */

                status = acpi_ex_resolve_multiple (walk_state, operand[0], &type, &temp_desc);

                if (ACPI_FAILURE (status)) {

                        goto cleanup;

                }

                /*

                 * Type is guaranteed to be a buffer, string, or package at this

                 * point (even if the original operand was an object reference, it

                 * will be resolved and typechecked during operand resolution.)

                 */

                switch (type) {

                case ACPI_TYPE_BUFFER:

                        value = temp_desc->buffer.length;

                        break;

                case ACPI_TYPE_STRING:

                        value = temp_desc->string.length;

                        break;

                case ACPI_TYPE_PACKAGE:

                        value = temp_desc->package.count;

                        break;

                default:

                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "size_of, Not Buf/Str/Pkg - found type %s\n",

                                acpi_ut_get_type_name (type)));

                        status = AE_AML_OPERAND_TYPE;

                        goto cleanup;

                }

                /*

                 * Now that we have the size of the object, create a result

                 * object to hold the value

                 */

                return_desc = acpi_ut_create_internal_object (ACPI_TYPE_INTEGER);

                if (!return_desc) {

                        status = AE_NO_MEMORY;

                        goto cleanup;

                }

                return_desc->integer.value = value;

                break;

        case AML_REF_OF_OP:             /* ref_of (source_object) */

                status = acpi_ex_get_object_reference (operand[0], &return_desc, walk_state);

                if (ACPI_FAILURE (status)) {

                        goto cleanup;

                }

                break;

        case AML_DEREF_OF_OP:           /* deref_of (obj_reference | String) */

                /* Check for a method local or argument, or standalone String */

                if (ACPI_GET_DESCRIPTOR_TYPE (operand[0]) != ACPI_DESC_TYPE_NAMED) {

                        switch (ACPI_GET_OBJECT_TYPE (operand[0])) {

                        case ACPI_TYPE_LOCAL_REFERENCE:

                                /*

                                 * This is a deref_of (local_x | arg_x)

                                 *

                                 * Must resolve/dereference the local/arg reference first

                                 */

                                switch (operand[0]->reference.opcode) {

                                case AML_LOCAL_OP:

                                case AML_ARG_OP:

                                        /* Set Operand[0] to the value of the local/arg */

                                        status = acpi_ds_method_data_get_value (operand[0]->reference.opcode,

                                                         operand[0]->reference.offset, walk_state, &temp_desc);

                                        if (ACPI_FAILURE (status)) {

                                                goto cleanup;

                                        }

                                        /*

                                         * Delete our reference to the input object and

                                         * point to the object just retrieved

                                         */

                                        acpi_ut_remove_reference (operand[0]);

                                        operand[0] = temp_desc;

                                        break;

                                case AML_REF_OF_OP:

                                        /* Get the object to which the reference refers */

                                        temp_desc = operand[0]->reference.object;

                                        acpi_ut_remove_reference (operand[0]);

                                        operand[0] = temp_desc;

                                        break;

                                default:

                                        /* Must be an Index op - handled below */

                                        break;

                                }

                                break;

                        case ACPI_TYPE_STRING:

                                /*

                                 * This is a deref_of (String). The string is a reference to a named ACPI object.

                                 *

                                 * 1) Find the owning Node

                                 * 2) Dereference the node to an actual object.  Could be a Field, so we nee

                                 *    to resolve the node to a value.

                                 */

                                status = acpi_ns_get_node_by_path (operand[0]->string.pointer,

                                                  walk_state->scope_info->scope.node, ACPI_NS_SEARCH_PARENT,

                                                  ACPI_CAST_INDIRECT_PTR (struct acpi_namespace_node, &return_desc));

                                if (ACPI_FAILURE (status)) {

                                        goto cleanup;

                                }

                                status = acpi_ex_resolve_node_to_value (

                                                  ACPI_CAST_INDIRECT_PTR (struct acpi_namespace_node, &return_desc), walk_state);

                                goto cleanup;

                        default:

                                status = AE_AML_OPERAND_TYPE;

                                goto cleanup;

                        }

                }

                /* Operand[0] may have changed from the code above */

                if (ACPI_GET_DESCRIPTOR_TYPE (operand[0]) == ACPI_DESC_TYPE_NAMED) {

                        /*